Hi AbdulRasheed1984!
=== How may edge servers should I deploy? One edge server for each standard edition pool?
In my experience, you can definitely have multiple FE pools behind a single Edge pool. This is one of the most common deployment topologies out there. For more details about how to deploy edge server pool, you can refer to:
http://blog.schertz.name/2016/03/skype-for-business-2015-edge-pool-deployment/
===Do we need a load balancer if I use on edge server of each standard edition pool?
Yes, you need load balancer. Load balancing distributes traffic among the servers in a pool. If you have Front end pools, edge server pool, you need to deploy load balances for these pools. For more details about edge server load balancing requirements,
you can learn from:
https://docs.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/network-requirements/load-balancing#hardware-load-balancer-requirements-for-edge-servers-running-the-av-edge-service
===If I use only one Edge server and the primary standard edition server is failed, will I get the edge function once manually fail over the SFB edge pool?
If a front end pool fails but the edge pool at this site is still running, you must know whether the Edge pool uses the failed pool as a next hop pool. If it does, you must change the Edge pool to use a different Front End pool before failing over the failed
Front End pool. For more details, you can refer to:
https://docs.microsoft.com/en-us/skypeforbusiness/manage/ha-dr-and-backup-service/failing-over-and-failing-back-a-pool#fail-over-a-front-end-pool
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Best Regards,
Jimmy Yang
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